40个1.25乘以40个0.8怎样简便算1.25*1.25*……*1.25*0.8*0.8*……0.8=?(40个) (40个)急!帮帮我1!
问题描述:
40个1.25乘以40个0.8怎样简便算
1.25*1.25*……*1.25*0.8*0.8*……0.8=?
(40个) (40个)
急!帮帮我1!
答
(1.25*0.8)*(1.25*0.8)*.*(1.25*0.8)=1 也就是1的40次方=1